Foundation plate load experiment device

Abstract

The utility model relates to the technical field of foundation bearing capacity experiments, and provides a foundation flat plate load experiment device which comprises an upper supporting plate, a lower supporting plate, a pressurizing mechanism, an angle adjusting mechanism and a walking mechanism. A displacement sensor is mounted on the lower supporting plate; the upper supporting plate and the lower supporting plate are installed at the upper end and the lower end of the pressurizing mechanism respectively. The angle adjusting mechanism is arranged on the upper supporting plate; the walking mechanism is installed on the upper surface of the lower supporting plate. By arranging the angle adjusting mechanism, the overall angle of the device can be corrected in time, it is guaranteed that the device is placed more reasonably, the structure is simple, and operation is convenient; meanwhile, the foldable walking mechanism is arranged, on the premise that the size is set reasonably, load testing is not affected, the walking mechanism can drive the device to walk in the cave, the device is more convenient to place, and the testing efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation bearing capacity experiments, in particular to a foundation flat plate load experiment device. Background Art

[0002] The plate load test is the earliest and most widely used in-situ test method. It is an in-situ test that applies loads in stages on a rigid pressure plate of a certain size to observe the pressure and deformation of natural or artificial foundations under the action of each level of load.

[0003] In the construction field, a large load needs to be provided for testing, such as placing cement bags, etc. This method consumes manpower and material resources and has low work efficiency;

[0004] In the invention patent with the patent number "CN 215052823 U", a method of detecting in a flat cave is proposed. This method is simple and efficient, but it is inconvenient when adjusting the position. Utility Model Content

[0005] The utility model proposes a foundation flat plate load test device. By setting an angle adjustment mechanism, the overall angle of the device can be corrected in time to ensure that the placement of the device is more reasonable, the structure is simple, and the operation is convenient. At the same time, a foldable walking mechanism is provided. Under the premise of reasonable size setting, the load test is not affected. The walking mechanism can drive the device to walk in the flat cave, which makes the placement of the device more convenient and effectively improves the test efficiency.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A foundation plate load test device, comprising: an upper support plate, a lower support plate, a pressurizing mechanism, an angle adjustment mechanism and a walking mechanism;

[0008] A displacement sensor is installed on the lower support plate;

[0009] The upper support plate and the lower support plate are respectively installed at the upper and lower ends of the pressurizing mechanism;

[0010] The angle adjustment mechanism is provided on the upper support plate;

[0011] The walking mechanism is installed on the upper surface of the lower support plate;

[0012] The angle adjustment mechanism includes a positioning cylinder, an adjustment cylinder, an adjustment rod and a positioning plate, wherein the positioning cylinder is installed on the center of the top surface of the upper support plate, the adjustment cylinder is rotatably mounted on the top of the positioning cylinder, the adjustment rod is simultaneously mounted in the positioning cylinder and the adjustment cylinder, and the positioning plate is rotatably mounted on the top of the adjustment rod;

[0013] The positioning tube and the adjusting tube are both provided with internal threads, and the adjusting rod is provided with external threads, and the external threads match with the internal threads.

[0014] Further, the pressurizing mechanism includes a jack, an oil pump and an oil pipe, the upper support plate is installed on the top of the jack, the lower support plate is installed on the bottom of the jack, the oil pump is installed on the lower support plate, one end of the oil pipe is connected to the jack, and the other end is connected to the oil pump;

[0015] A pressure gauge is arranged on the oil pipe.

[0016] Further, the walking mechanism includes a first lifting cylinder, a second lifting cylinder, a first rotating shaft, a first walking wheel, a second walking wheel, a first sprocket, a chain, a second rotating shaft, a third walking wheel, a fourth walking wheel, a second sprocket, a third lifting cylinder, a first pulley, a second pulley, a transmission belt and a motor;

[0017] The first lifting cylinder and the second lifting cylinder are symmetrically installed on the left and right sides of the lower support plate;

[0018] A first limiting ring and a second limiting ring are respectively provided at the bottom of the first lifting cylinder and the bottom of the second lifting cylinder;

[0019] The first rotating shaft is sleeved in the first limiting ring, the first walking wheel and the second walking wheel are respectively installed at two ends of the first rotating shaft, and the first sprocket is sleeved on the first rotating shaft;

[0020] The second rotating shaft is sleeved in the second limiting ring, the third walking wheel and the fourth walking wheel are respectively installed at two ends of the second rotating shaft, and the second sprocket is sleeved on the second rotating shaft;

[0021] The chain is meshed with the first sprocket and the second sprocket at the same time;

[0022] The third lifting cylinder is installed on the lower support plate, the motor is installed on the third lifting cylinder, the first pulley is mounted on the output shaft of the third lifting cylinder, the second pulley is mounted on the first rotating shaft, and the transmission belt is mounted on the first pulley and the second pulley at the same time.

[0023] Furthermore, it also includes a fine-tuning mechanism, which includes a threaded column and an adjusting head. The adjusting head is provided with an internal thread, and the adjusting head is installed on the threaded column.

[0024] Furthermore, the regulating heads are provided in multiple numbers with different specifications.

[0025] Furthermore, an adjusting handle mounting cylinder is provided on the adjusting cylinder, and a detachable adjusting handle is mounted in the adjusting handle mounting cylinder.

[0026] The utility model is capable of timely correcting the overall angle of the device by setting an angle adjustment mechanism, thereby ensuring that the placement position of the device is more reasonable, with a simple structure and easy operation. At the same time, a foldable walking mechanism is provided, which does not affect the load test under the premise of reasonable size setting. The walking mechanism can drive the device to walk in the flat cave, making the placement of the device more convenient and effectively improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 It is a structural schematic diagram of a foundation plate load test device in a specific embodiment of the utility model;

[0029] Figure 2 for Figure 1 A structural exploded view of a foundation plate load test device shown;

[0030] Figure 3 for Figure 1 , Figure 2 A schematic structural diagram of a foundation plate load test device is shown. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the specific embodiment of the present utility model, see Figure 1-Figure 3 , a foundation plate load test device, comprising: an upper support plate 1, a lower support plate 2, a pressurizing mechanism 3, an angle adjustment mechanism 4 and a walking mechanism 5;

[0033] A displacement sensor 6 is installed on the lower support plate 2, and the displacement sensor is used to sense the sinking depth of the lower support plate;

[0034] The upper support plate 1 and the lower support plate 2 are respectively installed at the upper and lower ends of the pressurizing mechanism 3;

[0035] The angle adjustment mechanism 4 is arranged on the upper support plate 1;

[0036] The walking mechanism 5 is installed on the upper surface of the lower support plate 2. Since it is troublesome to move the device in the flat cave, the walking mechanism 5 is provided to facilitate the overall movement of the device and improve work efficiency.

[0037] In the specific embodiment of the present utility model, see Figure 1-Figure 3 When the installation angle of the device is offset, it is inconvenient to rotate the device in the flat cave, based on this, an angle adjustment mechanism 4 is set;

[0038] The angle adjustment mechanism 4 includes a positioning cylinder 41, an adjustment cylinder 42, an adjustment rod 43 and a positioning plate 44. The positioning cylinder 41 is installed on the center of the top surface of the upper support plate. The adjustment cylinder 42 is rotatably mounted on the top of the positioning cylinder 41. The adjustment rod 43 is simultaneously mounted in the positioning cylinder 41 and the adjustment cylinder 42. The positioning plate 44 is rotatably mounted on the top of the adjustment rod 43.

[0039] The positioning cylinder 41 and the adjusting cylinder 42 are both provided with internal threads, and the adjusting rod 43 is provided with external threads, and the external threads cooperate with the internal threads;

[0040] During operation, the adjusting rod 43 is moved upward by rotating the adjusting cylinder 42 until the positioning plate 44 contacts and slightly tightens the top surface of the flat cave, and then the device is rotated as a whole to make the position of the device more accurate.

[0041] In the specific embodiment of the present utility model, see Figure 1-Figure 3 The pressurizing mechanism 3 includes a jack 31, an oil pump 32 and an oil pipe 33. The upper support plate 1 is mounted on the top of the jack 31, the lower support plate 2 is mounted on the bottom of the jack 31, the oil pump 32 is mounted on the lower support plate 2, and one end of the oil pipe 33 is connected to the jack 31, and the other end is connected to the oil pump 32;

[0042] The oil pipe 32 is provided with a pressure gauge 34;

[0043] By pressurizing the jack with a pump to provide a set pressure value, the detection work is more convenient and the detection result is more accurate.

[0044] In the specific embodiment of the present utility model, see Figure 1-Figure 3The walking mechanism 5 includes a first lifting cylinder 501, a second lifting cylinder 502, a first rotating shaft 503, a first walking wheel 504, a second walking wheel 505, a first sprocket 506, a chain 507, a second rotating shaft 508, a third walking wheel 509, a fourth walking wheel 510, a second sprocket 511, a third lifting cylinder 512, a first pulley 513, a second pulley 514, a transmission belt 515 and a motor 516;

[0045] The first lifting cylinder 501 and the second lifting cylinder 502 are symmetrically installed on the left and right sides of the lower support plate 2;

[0046] A first limiting ring and a second limiting ring are respectively disposed at the bottom of the first lifting cylinder 501 and the bottom of the second lifting cylinder 502;

[0047] The first rotating shaft 503 is sleeved in the first limiting ring, the first walking wheel 504 and the second walking wheel 505 are respectively installed at two ends of the first rotating shaft 503, and the first sprocket 506 is sleeved on the first rotating shaft 503;

[0048] The second rotating shaft 508 is sleeved in the second limiting ring, the third walking wheel 509 and the fourth walking wheel 510 are respectively installed at two ends of the second rotating shaft 508, and the second sprocket 511 is sleeved on the second rotating shaft 508;

[0049] The chain 507 is meshed with the first sprocket 506 and the second sprocket 511 at the same time;

[0050] The third lifting cylinder 512 is installed on the lower support plate 2, the motor 516 is installed on the third lifting cylinder 512, the first pulley 513 is mounted on the output shaft of the third lifting cylinder 512, the second pulley 514 is mounted on the first rotating shaft 503, and the transmission belt 515 is mounted on the first pulley 513 and the second pulley 514 at the same time.

[0051] In the specific embodiment of the present utility model, see Figure 1-Figure 3 , further comprising a fine-tuning mechanism 7, the fine-tuning mechanism 7 comprising a threaded column 71 and an adjusting head 72, the adjusting head 72 being provided with an internal thread, and the adjusting head 72 being mounted on the threaded column 74;

[0052] Choose the appropriate adjustment head according to the height of the excavated flat cave, and minimize the use of jacks;

[0053] There are multiple fine-tuning mechanisms, for example, one at each corner.

[0054] In the specific embodiment of the present utility model, see Figure 1-Figure 3 The regulating head 72 is provided with a plurality of different specifications.

[0055] In the specific embodiment of the present utility model, see Figure 1-Figure 3 The adjusting cylinder 42 is provided with an adjusting handle mounting cylinder 45 , and a detachable adjusting handle 46 is mounted in the adjusting handle mounting cylinder 45 .

[0056] In the specific embodiment of the present utility model, see Figure 1-Figure 3 When working, first dig a flat cave. The height and width of the flat cave should be able to adapt to the size of the flat plate load test device.

[0057] Since the flat cave is inside the foundation, before the foundation plate load test device is placed into the shaft, the first lifting cylinder, the second lifting cylinder and the third lifting cylinder are at the lowest displacement, and the first running wheel, the second running wheel, the third running wheel and the fourth running wheel are in contact with the ground;

[0058] After the foundation plate load test device is placed in the shaft, the motor starts working, the motor drives the first rotating shaft to rotate, and then drives the first walking wheel and the second walking wheel to rotate. At the same time, the first rotating shaft drives the second rotating shaft to rotate through the cooperation of the first sprocket, the second sprocket and the chain, and the second rotating shaft drives the third walking wheel and the fourth walking wheel to rotate. With the cooperation of the first walking wheel, the second walking wheel, the third walking wheel and the fourth walking wheel, the foundation plate load test device moves forward as a whole until it moves to the specified position;

[0059] At the same time, in order to ensure that the device can be moved to the specified position as a whole, a matching track can be set up, and the matching track can be placed in the flat cave, and it can be taken away after the test is completed. The track will not affect the test;

[0060] After reaching the designated position, the gas pressure rods of the first lifting cylinder, the second lifting cylinder and the third lifting cylinder extend upward at the same time, and finally drive the first running wheel, the second running wheel, the third running wheel and the fourth running wheel to be lifted upward until the height of the bottom end position of the four running wheels from the top surface of the lower support plate is greater than the expected sinking height of the lower support plate;

[0061] Then the jack lifts the upper support plate upward until the top surface of the adjusting head contacts the top surface of the flat cave;

[0062] Then return the pressure gauge to zero, turn on the oil pump, and begin testing;

[0063] After the test is completed, remove the device by reversing the steps.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foundation plate load test device, characterized in that: It includes an upper support plate, a lower support plate, a pressurizing mechanism, an angle adjustment mechanism and a walking mechanism; A displacement sensor is installed on the lower support plate; The upper support plate and the lower support plate are respectively installed at the upper and lower ends of the pressurizing mechanism; The angle adjustment mechanism is provided on the upper support plate; The walking mechanism is installed on the upper surface of the lower support plate; The angle adjustment mechanism includes a positioning cylinder, an adjustment cylinder, an adjustment rod and a positioning plate, wherein the positioning cylinder is installed at the center of the top surface of the upper support plate, the adjustment cylinder is rotatably mounted on the top of the positioning cylinder, the adjustment rod is simultaneously mounted in the positioning cylinder and the adjustment cylinder, and the positioning plate is rotatably mounted on the top of the adjustment rod; The positioning tube and the adjusting tube are both provided with internal threads, and the adjusting rod is provided with external threads, and the external threads match with the internal threads.

2. A foundation plate load test device as claimed in claim 1, characterized in that: The pressurizing mechanism comprises a jack, an oil pump and an oil pipe, the upper support plate is mounted on the top of the jack, the lower support plate is mounted on the bottom of the jack, the oil pump is mounted on the lower support plate, one end of the oil pipe is connected to the jack, and the other end is connected to the oil pump; A pressure gauge is arranged on the oil pipe.

3. A ground-based plate load test device as claimed in claim 1, characterized in that: The walking mechanism includes a first lifting cylinder, a second lifting cylinder, a first rotating shaft, a first walking wheel, a second walking wheel, a first sprocket, a chain, a second rotating shaft, a third walking wheel, a fourth walking wheel, a second sprocket, a third lifting cylinder, a first pulley, a second pulley, a transmission belt and a motor; The first lifting cylinder and the second lifting cylinder are symmetrically installed on the left and right sides of the lower support plate; A first limiting ring and a second limiting ring are respectively provided at the bottom of the first lifting cylinder and the bottom of the second lifting cylinder; The first rotating shaft is sleeved in the first limiting ring, the first walking wheel and the second walking wheel are respectively installed at two ends of the first rotating shaft, and the first sprocket is sleeved on the first rotating shaft; The second rotating shaft is sleeved in the second limiting ring, the third walking wheel and the fourth walking wheel are respectively installed at two ends of the second rotating shaft, and the second sprocket is sleeved on the second rotating shaft; The chain is meshed with the first sprocket and the second sprocket at the same time; The third lifting cylinder is installed on the lower support plate, the motor is installed on the third lifting cylinder, the first pulley is mounted on the output shaft of the third lifting cylinder, the second pulley is mounted on the first rotating shaft, and the transmission belt is mounted on the first pulley and the second pulley at the same time.

4. A foundation plate load test device as claimed in claim 1, characterized in that: It also includes a fine-tuning mechanism, which includes a threaded column and an adjusting head. The adjusting head is provided with an internal thread, and the adjusting head is installed on the threaded column.

5. A foundation plate load test device as claimed in claim 4, characterized in that: The regulating heads are provided in plurality with different specifications.

6. A foundation plate load test device as claimed in claim 1, characterized in that: An adjusting handle mounting cylinder is arranged on the adjusting cylinder, and a detachable adjusting handle is mounted in the adjusting handle mounting cylinder.

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